var menuOffX=0	//菜单距连接文字最左端距离
var menuOffY=18	//菜单距连接文字顶端距离
var vBobjects = new Array();
var fo_shadows=new Array()

////No need to edit beyond here
var ie4=document.all&&navigator.userAgent.indexOf("Opera")==-1
var ns6=document.getElementById&&!document.all
var ns4=document.layers
//showmenu vmenu:内容，允许为空,vmenuobj DIV数据ID，MOD 0=关闭浏览器自适应，用于版面导航菜单
function showmenu(e,vmenu,vmenuobj,mod){   
	if (!document.all&&!document.getElementById&&!document.layers)
		return
	var which=vmenu;
	if (vmenuobj)
	{	
		var MenuObj = fetch_object(vmenuobj);
		if (MenuObj)
		{
			which = MenuObj.innerHTML;
		}
	}
	if (!which)
	{
		return
	}
	
	clearhidemenu();	
	ie_clearshadow();
	menuobj=ie4? document.all.popmenu : ns6? document.getElementById("popmenu") : ns4? document.popmenu : ""
	menuobj.thestyle=(ie4||ns6)? menuobj.style : menuobj
	if (ie4||ns6)
		menuobj.innerHTML=which
	else{
		menuobj.document.write('<layer name=gui bgcolor="#E6E6E6" width="165" onmouseover="clearhidemenu()" onmouseout="hidemenu()">'+which+'</layer>')
		menuobj.document.close()
	}
	menuobj.contentwidth=(ie4||ns6)? menuobj.offsetWidth : menuobj.document.gui.document.width
	menuobj.contentheight=(ie4||ns6)? menuobj.offsetHeight : menuobj.document.gui.document.height
	eventX=ie4? event.clientX : ns6? e.clientX : e.x
	eventY=ie4? event.clientY : ns6? e.clientY : e.y
	var rightedge=ie4? document.body.clientWidth-eventX : window.innerWidth-eventX
	var bottomedge=ie4? document.body.clientHeight-eventY : window.innerHeight-eventY
	var getlength
	if (rightedge<menuobj.contentwidth){
		getlength=ie4? document.body.scrollLeft+eventX-menuobj.contentwidth+menuOffX : ns6? window.pageXOffset+eventX-menuobj.contentwidth : eventX-menuobj.contentwidth
	
	}else{		
		getlength=ie4? ie_x(event.srcElement)+menuOffX : ns6? window.pageXOffset+eventX : eventX 					
		
	}
	menuobj.thestyle.left=getlength+'px'
	
	if (bottomedge<menuobj.contentheight&&mod!=0){
		getlength=ie4? document.body.scrollTop+eventY-menuobj.contentheight-event.offsetY+menuOffY-23 : ns6? window.pageYOffset+eventY-menuobj.contentheight-10 : eventY-menuobj.contentheight
	}	else{
		getlength=ie4? ie_y(event.srcElement)+menuOffY : ns6? window.pageYOffset+eventY+10 : eventY
	}
	
	menuobj.thestyle.top=getlength+'px'
	menuobj.thestyle.visibility="visible"
	ie_dropshadow(menuobj,"#999999",3)	
	return false
}



function fetch_object(idname, forcefetch)
{
	if (typeof(vBobjects[idname]) == "undefined")
	{
		vBobjects[idname] = MM_findObj(idname);
	}	
	return vBobjects[idname];
}

function ie_y(e){  
	var t=e.offsetTop;  
	while(e=e.offsetParent){  
		t+=e.offsetTop;  
	}  
	return t;  
}  
function ie_x(e){  
	var l=e.offsetLeft;  
		
	while(e=e.offsetParent){  
	    l+=e.offsetLeft; 	   
	} 
	 
	return l;  
}  
function ie_dropshadow(el, color, size)
{
	var i;
	for (i=size; i>0; i--)
	{
		var rect = document.createElement('div');
		var rs = rect.style
		rs.position = 'absolute';
		rs.left = (el.style.posLeft + i) + 'px';
		rs.top = (el.style.posTop + i) + 'px';
		rs.width = el.offsetWidth + 'px';
		rs.height = el.offsetHeight + 'px';
		rs.zIndex = el.style.zIndex - i;
		rs.backgroundColor = color;
		var opacity = 1 - i / (i + 1);
		rs.filter = 'alpha(opacity=' + (100 * opacity) + ')';		
		fo_shadows[fo_shadows.length] = rect;
	}
}
function ie_clearshadow()
{
	for(var i=0;i<fo_shadows.length;i++)
	{
		if (fo_shadows[i])
			fo_shadows[i].style.display="none"
	}
	fo_shadows=new Array();
}

function hidemenu(){
	if (window.menuobj)
		menuobj.thestyle.visibility=(ie4||ns6)? "hidden" : "hide"
	ie_clearshadow()
}

function clearhidemenu(){
	if (window.delayhide)
		clearTimeout(delayhide)
}

function MM_findObj(n, d) {
var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  
	for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  
	if(!x && d.getElementById) x=d.getElementById(n); return x;

} 

function dynamichide(e){
	if (ie4&&!menuobj.contains(e.toElement))
		hidemenu()
	else if (ns6&&e.currentTarget!= e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget))
		hidemenu()
}

function delayhidemenu(){
	if (ie4||ns6||ns4)
		delayhide=setTimeout("hidemenu()",500)
}


//---------------------------------------------------
//Author: kaichun
//---------------------------------------------------

function setActiveStyleSheet(title){
	var i, a, main;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
			a.disabled = true;
			if(a.getAttribute("title") == title)
			{
			    a.disabled = false;
			    document.getElementById("styleby").innerHTML = a.className;
			 }
			
			createCookie("styles", title, 365);
		}
	}
	document.getElementById("logo").src="styles/"+title+"/images/logo.gif";
}

function getActiveStyleSheet(){
	var i, a;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
	}
	return null;
}

function getPreferredStyleSheet(){
	var i, a;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("rel").indexOf("alt") == -1 && a.getAttribute("title"))
			return a.getAttribute("title");
	}
	return null;
}

function createCookie(nm,val,y){
	var exp="";
	if(y){ 
		var dt=new Date(); 
		dt.setTime(dt.getTime()+(y*86400000)); 
		exp="; expires="+dt.toGMTString();
	} 
	document.cookie=nm+"="+escape(val)+exp+";path=/"; 
}

function readCookie(nm){ 
	var m; 
	if(window.RegExp){ 
		var re=new RegExp(";\\s*"+nm+"=([^;]*)","i"); 
		m=re.exec(';'+document.cookie); 
	} 
	return(m?unescape(m[1]):"");
}

window.onload = function(e){
	var cookie = readCookie("styles");
	var title = cookie ? cookie : getPreferredStyleSheet();
	var styleList=document.getElementById("stylelist");
	var flag=true;
	if(styleList){
		for(var i=0;i<styleList.options.length;i++){
			if(title==styleList.options[i].value){
				flag=false;
			}
		}
		if(flag){
			title=styleList.options[0].value;
		}
		styleList.value=title;
	}
//	setActiveStyleSheet(title);
}


function init(){
	var cookie = readCookie("styles");
	var title = cookie ? cookie : getPreferredStyleSheet();
	setActiveStyleSheet(title);
}